I used to have this shapeable funnel, you could form it to get a pretty good wrap around and keep the frame clean.
https://www.amazon.com/dp/B017MTFIYE/ref=cm_sw_r_cp_awdb_imm_RGJ7HHVH4SAQAWFYJY8N
This flexible funnel works in mysterious ways, would be perfect to deflect in this case.
Form-A-Funnel Flexible Draining Tool - General Purpose https://www.amazon.com/dp/B017MTFIYE/ref=cm_sw_r_cp_api_glt_fabc_FXKFZ0H3JSW0ZNJD2K24
Found this from WatchWesWork.
FormAFunnel
https://www.amazon.co.uk/FORM-FUNNEL-Flexible-Draining-Tool/dp/B017MTFIYE
Big bendable sheet so you can drain stuff without covering other stuff.